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Add close-on-exec flag for file descriptors.

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I was surprised to find that dup()'ed fds don't share the close-on-exec flag.
That means it has to be stored separately from the FileDescriptor object.
This commit is contained in:
Andreas Kling 2018-11-13 01:36:31 +01:00
parent 19b9401487
commit 97c799576a
10 changed files with 74 additions and 35 deletions
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9
Kernel/Process.h
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@ -252,7 +252,14 @@ private:
DWORD m_wakeupTime { 0 };
TSS32 m_tss;
TSS32 m_tss_to_resume_kernel;
Vector<RetainPtr<FileDescriptor>> m_file_descriptors;
struct FileDescriptorAndFlags {
operator bool() const { return !!descriptor; }
void clear() { descriptor = nullptr; flags = 0; }
void set(RetainPtr<FileDescriptor>&& d, dword f = 0) { descriptor = move(d), flags = f; }
RetainPtr<FileDescriptor> descriptor;
dword flags { 0 };
};
Vector<FileDescriptorAndFlags> m_fds;
RingLevel m_ring { Ring0 };
int m_error { 0 };
void* m_kernelStack { nullptr };